Sediment incipient motion in sewer with a bed deposit

Authors

• Wan Hanna Melini Wan Mohtar
• Charles Hin Joo Bong
• Aminuddin Ab Ghani
• Mir Jafar Sadegh Safari
• Aizat Mohd Taib
• Haitham Abdulmohsin Afan
• Ahmed El-ShafieFollow

Document Type

Article

Publication Date

1-1-2022

Abstract

This paper analyses experimental data on sediment incipient motion with varying sediment bed thickness (of d(50), 5, 10 and 24 mm). Sediment particles (with sizes ranging from 0.5 mm to 4.78 mm) were used to evaluate the effect of deposited bed. Variation of shear velocity estimation was investigated where the critical Shields parameter was expressed using bed-slope product u(*cb), log-law u(*cl )and was extended in terms of critical mean velocity. The critical Shields parameters obtained were significantly lower than the traditional Shields curve when u(*cl) was used compared to u(*cb). Higher critical mean velocity is needed for shallower deposits.

Keywords

Threshold criteria of sediment motion, Shields parameter, Sediment bed thickness

Publication Title

Teknik Dergi

Recommended Citation

Wan Mohtar, Wan Hanna Melini; Hin Joo Bong, Charles; Ab Ghani, Aminuddin; Safari, Mir Jafar Sadegh; Taib, Aizat Mohd; Afan, Haitham Abdulmohsin; and El-Shafie, Ahmed, "Sediment incipient motion in sewer with a bed deposit" (2022). Research Publications (2021 to 2025). 9059.
https://knova.um.edu.my/research_publications_2021_2025/9059

Divisions

fac_eng

Funders

Ministry of Higher Education for the Fundamental Research Grant Scheme[FRGS/1/2018/TK01/UKM/02/4],Universiti Malaysia Sarawak under the MyRA Special Grant Scheme[F02/SpGS/1542/2017]

Volume

33

Issue

1

Publisher

Turkish Chamber Civil Engineers

Publisher Location

SELANIK CAD NO 19-1, KIZILAY, ANKARA 06650, TURKEY